INVESTIGADORES
FERREIRA Maria Lujan
artículos
Título:
Theoretical and Experimental Study of Pb2+ and Hg2+ Adsorption on Biopolymers, 2
Autor/es:
ADRIANA DEBBAUDT; MARTA ZALBA; MARÍA LUJÁN FERREIRA; MARÍA ELENA GSCHAIDER
Revista:
Macromolecular Bioscience - (Online)
Editorial:
Wiley
Referencias:
Año: 2001 vol. 1 p. 249 - 257
ISSN:
1616-5195
Resumen:
Chitosan and pectin were studied as adsorbents for Hg2+ and Pb2+ from acidic aqueous solutions.The conditions were selected to analyze the adsorptionefficiency of pellets of chitosan?pectin. Kinetics data arereported in this work for conditions under which ppm ofcontaminants are adsorbed. The ability of these biopolymers to remove Pb and Hg from polluted water was investigated using the unmodified biopolymers and the pelletsunder identical conditions. Results from MolecularMechanics calculations (MM2) and semiempirical calculations are discussed together to get more insight into themechanism of metal retention and the effect of conformational factors on adsorption. Several adsorption sites wereconsidered for the biopolymers and many adsorptionmechanisms proposed, taking into account the theoreticaland experimental results.
